Changeset 9352 for branches/LearningClassifierSystems/HeuristicLab.Encodings.DecisionList/3.3/Action/StringAction.cs

Timestamp:

04/10/13 15:15:13 (11 years ago)

Author:

sforsten

Message:

#1980:

• added DecisionListView
• added event handlers in *ProblemData
• renamed project Problems.XCS.Views to Problems.lCS.Views and Problems.Instances.ConditionActionClassification to Problems.Instances.LCS
• integrated niching in GAssist and added NichingTournamentSelector
• minor code improvements and property changes

File:

• branches/LearningClassifierSystems/HeuristicLab.Encodings.DecisionList/3.3/Action/StringAction.cs (modified) (4 diffs)

branches/LearningClassifierSystems/HeuristicLab.Encodings.DecisionList/3.3/Action/StringAction.cs

@@ -25 +25 @@
 using HeuristicLab.Common;
 using HeuristicLab.Core;
+using HeuristicLab.Optimization.Operators.LCS;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
 
@@ -31 +32 @@
   [Item("StringAction", "")]
   public class StringAction : Item, IAction<string> {
+
+    public static IEqualityComparer<IGAssistNiche> Comparer {
+      get { return new DecisionListNicheComparer(); }
+    }
+
+    IEqualityComparer<IGAssistNiche> IGAssistNiche.Comparer {
+      get { return Comparer; }
+    }
 
     [Storable]
@@ -92 +101 @@
     }
 
+    public void Randomize(IRandom random, IEnumerable<IAction> except) {
+      if (except.Count() == 0) {
+        Randomize(random);
+        return;
+      }
+      try {
+        var exceptInt = except.Cast<StringAction>().Select(x => x.CurrentActionIndex);
+        var newPossibleFeatures = Enumerable.Range(0, possibleFeatures.Count()).Except(exceptInt);
+        currentActionIndex = newPossibleFeatures.ElementAt(random.Next(0, newPossibleFeatures.Count()));
+      }
+      catch (InvalidCastException) {
+        throw new InvalidCastException("Actions have to be of type IntAction");
+      }
+    }
+
     public bool Match(IAction action) {
       var targetCast = action as StringAction;
@@ -107 +131 @@
 
     public override string ToString() {
-      return CurrentAction;
+      return variableName + ": " + CurrentAction;
+    }
+
+    public bool SameNiche(IGAssistNiche niche) {
+      return Match(niche as IAction);
+    }
+
+    public int GetNicheHashCode() {
+      int result = 1;
+      result = 37 * result + currentActionIndex;
+      result = 37 * result + variableName.GetHashCode();
+      foreach (var feature in possibleFeatures) {
+        result = 37 * result + feature.GetHashCode();
+      }
+      return result;
     }
   }